It's so annoying, Scott. The store platform doesn't have a good calculator for export airmail, and always screws it up. I put a little note on each product page that's small, like the patches that says "We will ship this item by first class mail and adjust the shipping charges accordingly. Don't worry, we're not going to charge you $10 to ship a $9 patch. Shipping weight is 2 ounces."
So basically we ask you to trust us to not charge you the approved amount on your Paypal or credit card but we'll reduce the transaction to the actual postage price.
However, checking Canada, they have very strict postal regulations, and we aren't allowed to send anything with a value over $0 in a first class envelope (which would only be $3.33 in postage), it must be in a box, so the postage is actually $10.
The worst thing to mail internationally is the polish because liquids are heavy. I would say guitars are worse to mail internationally, but we never trust an instrument tot he postal service.
